Recent trends in electric power storage technology

Abstract

Research and development is underway in electric power storage technology for efficient utilization of power at night and flexible response to peak demand during the daytime. Recently, the stage of verification using actual equipment has been reached for applications to deal with momentary voltage sags, and for the application of multi-use applications such as the function of absorbing fluctuations in natural energy. We discuss recent trends in electric power storage technology mainly for the sodium-sulfur battery, which at present is the most practical battery for storing electricity.